hahahaha. actually i'm not that sure if i rmb-ed my work. :/

): you nvr reply my text! Lol.

i just saw it. hahahah

i save you, LOL1=x

you say de uh! Hahaha. If not i'll drown 0:

HAHAHA! I also same as juliana, not sure whether i remembered but basic de i can. HAHA!

econs realli v hard sia!

yeah, but actually if you understand quite easy. HAHA! I only very blur with drawing of graphs

my theory n graphs all i dun understand sia):

theory quite easy, hahax! ^^

haha ask me. I know. I know. lol